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Topic: The Robotic Guards (Read 759 times) |
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daemonturk
Newbie
Posts: 46
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The Robotic Guards
« on: Feb 23rd, 2009, 1:05am » |
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This riddle came from a friend of mine, and it will be my last one for today.
A man wishes to cross a bridge, from side A to B.
A:=================================:B
A physically invulnerable guard stands at each end of the bridge, who escorts you back to their side if they see you crossing. At 1 hour intervals, they take 10-second naps, but it takes you 20 seconds to completely cross the bridge (at your maximum sprinting speed). How do you cross the bridge?
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cheesepuff
Uberpuzzler
Posts: 694
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Re: The Robotic Guards
« Reply #1 on: Feb 23rd, 2009, 1:32am » |
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Prepare a Nintendo DS, you got a bit over 59 minutes to blow
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errrrrrrrrrrr........ 24
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daemonturk
Newbie
Posts: 46
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Re: The Robotic Guards
« Reply #2 on: Feb 23rd, 2009, 1:37am » |
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No... 
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towr
wu::riddles Moderator
Uberpuzzler
Some people are average, some are just mean.
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Re: The Robotic Guards
« Reply #3 on: Feb 23rd, 2009, 1:38am » |
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The obvious solution is to avoid being seen. So train to become a ninja and then cross the bridge unseen.
But turning around halfway also works.
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daemonturk
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Posts: 46
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Re: The Robotic Guards
« Reply #4 on: Feb 23rd, 2009, 1:39am » |
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Correct, was this already posted? 
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Grimbal
wu::riddles Moderator
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Re: The Robotic Guards
« Reply #5 on: Feb 23rd, 2009, 1:44am » |
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Uh, yes. But I believe the guards weren't robots.
Another way would be to step on the bridge. Guard A will go and get you. Guard B will go and get A. The 3 of you end up on side B.
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daemonturk
Newbie
Posts: 46
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Re: The Robotic Guards
« Reply #6 on: Feb 23rd, 2009, 1:49am » |
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Quote:| Uh, yes. But I believe the guards weren't robots. |
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The guards being invulnerable robots just clears up a lot of complications.
Quote:| Another way would be to step on the bridge. Guard A will go and get you. Guard B will go and get A. The 3 of you end up on side B. |
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The guards only escort humans back to their side. I should have worded that in.
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| « Last Edit: Feb 23rd, 2009, 1:50am by daemonturk » |
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towr
wu::riddles Moderator
Uberpuzzler
Some people are average, some are just mean.
Gender:
Posts: 13730
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Re: The Robotic Guards
« Reply #7 on: Feb 23rd, 2009, 2:02am » |
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on Feb 23rd, 2009, 1:39am, daemonturk wrote:| Correct, was this already posted? |
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yup
You can search the forum here. (Although you may need to set the maximum age back.) For this riddle it works to search on "guard bridge"
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daemonturk
Newbie
Posts: 46
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Re: The Robotic Guards
« Reply #8 on: Feb 23rd, 2009, 2:39am » |
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... I'll have to resort to making up riddles soon  .
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cheesepuff
Uberpuzzler
Posts: 694
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Re: The Robotic Guards
« Reply #9 on: Feb 23rd, 2009, 3:08am » |
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Ah. I thought they were facing out so they wouldn't see you on the bridge.
Anyways it's been a while since I've heard this riddle
And yeah, lots and lots of riddles have been posted.
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errrrrrrrrrrr........ 24
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Azgard
Senior Riddler
Just gonna drive around the planet, check it out.
Posts: 453
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Re: The Robotic Guards
« Reply #10 on: Feb 25th, 2009, 7:09am » |
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Sometimes it's a little tough to find riddles that haven't been posted in one form or another.
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Lots of opportunities are missed because they come dressed in overalls and look like work.
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